Abstract
Alcohol-impaired driving is a critical road-safety issue. This project presents a complete Alcohol Detection with Go Kart Ignition Locking system that combines a functional go-kart chassis with real-time breath alcohol sensing.
An MQ-3 gas sensor continuously monitors the driver’s breath. The Arduino microcontroller processes the analog reading and, if the alcohol concentration exceeds a safe threshold, activates a relay that interrupts the ignition or motor power circuit. Simultaneously a buzzer provides an audible warning. The system can be reset only after the alcohol level falls below the limit.
It is an excellent final-year project for Mechanical, Mechatronics, Automobile and Electronics students, integrating vehicle fabrication, sensor interfacing and safety control logic.
